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Draining and filtering net, particularly for geotechnical applications

a technology of filtering nets and geotechnical applications, applied in the field of geotechnical, can solve problems such as the inability of nets to solve problems fully

Inactive Publication Date: 2009-03-19
TENAX SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]Within this aim, an object of the invention is to provide a draining and filtering net which has particular mechanical strength characteristics and at the same time allows simplified manufacture.
[0006]Another object of the present invention is to provide a draining and filtering net, particularly for geotechnical applications, which thanks to its particular constructive characteristics is capable of giving the greatest assurances of reliability and safety in use.
[0007]Still another object of the present invention is to provide a draining and filtering net which can be obtained easily starting from commonly commercially available elements and materials and is also competitive from a merely economical standpoint.

Problems solved by technology

In practical execution, it has been observed that such nets are not always able to fully solve the problem, since they do not have the necessary mechanical strength and therefore flattenings can occur which in practice prevent correct draining.

Method used

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  • Draining and filtering net, particularly for geotechnical applications
  • Draining and filtering net, particularly for geotechnical applications
  • Draining and filtering net, particularly for geotechnical applications

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Embodiment Construction

[0017]With reference to the figures, the draining and filtering net, particularly for geotechnical applications, according to the invention, generally designated by the reference numeral 1, comprises an intermediate layer 2 and a first outer layer 3 and a second outer layer 4, which are applied at the opposite faces of the intermediate layer.

[0018]Preferably but not necessarily, the net is made of high-density polyethylene, since it has been found to be a polymer which is suitable for geotechnical applications, mixed with optional additives in order to provide the mechanical and color characteristics according to the final use and to relevant commercial requirements.

[0019]The intermediate layer 2, which is substantially the fundamental element in order to ensure good mechanical and hydraulic performance of the net, is constituted by a plurality of continuous filaments, designated by the reference numeral 10, which are arranged mutually side-by-side so as to create in practice a chan...

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Abstract

A draining and filtering net, particularly for geotechnical applications, comprising an intermediate layer and a first outer layer and a second outer layer at the mutually opposite faces of the intermediate layer. The particularity of the invention consists in that the intermediate layer and the outer layers are provided monolithically. The intermediate layer is constituted by a plurality of substantially continuous filaments which lie along the extrusion direction. At least one layer of nonwoven fabric is further provided which is connected to one of the outer layers.

Description

BACKGROUND OF THE INVENTION [0001]As is known, in the geotechnical field, draining and filtering nets are already used which are generally constituted by a mesh layer of different types, on one face of which there is a plurality of protrusions, to which a layer of nonwoven fabric is then connected.[0002]In practice, this kind of net is designed to create a draining region for the passage of liquid and to provide filtration for the containment of particulate, sand or more or less fine debris, by means of the nonwoven fabric layer.[0003]In practical execution, it has been observed that such nets are not always able to fully solve the problem, since they do not have the necessary mechanical strength and therefore flattenings can occur which in practice prevent correct draining.SUMMARY OF THE INVENTION [0004]The aim of the invention is to solve the problem described above by providing a draining and filtering net particularly for geotechnical applications which allows to ensure, even in...

Claims

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Application Information

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IPC IPC(8): B32B5/12B32B5/26
CPCB32B3/266B32B5/02E02D17/20B32B5/028Y10T428/24091B32B3/10B32B2307/54Y10T428/24099B32B5/12Y10T442/197
Inventor BERETTA, CESARE
Owner TENAX SPA